Re: Nested Sets vs. Nested Intervals

asdf wrote:
> Hi!,>> I am building a web directory similar to the dmoz and the yahoo> directory. The categories get updated often.>> How do I find the subcategories from just the names of the ancester and> the current categories? For example, both the dmoz and yahoo> directories have filesystem-like URLs instead of category IDs. How do I> do that with nested sets or nested intervals? If not, how do they do> it?>> There should be a count for how many listings in each subcategory. It> is much more efficient to count how many listings are in each> subcategory with nested sets than the adjacency list. Is there a way to> count how many listings are in each subcategory efficently with nested intervals with farey> fractions?> > Thank you very much!Received on Mon Nov 07 2005 - 15:37:22 CST